The growths, called polyps, were found during a routine cancer scan that Bush underwent Saturday at the Camp David presidential retreat. Examinations showed the growths were benign - in line with the White House's expectation that none of the five polyps appeared "worrisome."
"The president is in good health," Bush spokesman Tony Snow said. "There is no reason for alarm."
Bush's next cancer scan will be in three years, Snow said. That is the typical interval between exams given that amount of growths that were found this time, Snow said. There had been a five-year gap between Bush's 2002 colonoscopy and the one the president had over the weekend.
Polyps are extra pieces of tissues that grow inside the large intestine. Most polyps are not dangerous, but over time, they can turn cancerous. To be safe, doctors typically remove the polyps and test them. Finding them early is considered one of the best ways to preventing disease.
Bush, 61, regularly exercises and is considered to be in excellent shape for a man his age.
Bush had temporarily transferred the powers of the presidency to Vice President Dick Cheney during his medical procedure Saturday, invoking the rarely invoked 25th Amendment to the U.S. Constitution. During the 31-minute procedure, Bush was sedated with a drug called propofol.
Nothing occurred during the 2 hours and 5 minutes of the transfer that required Cheney to take official action, aides said.
Later that afternoon, Bush was quickly back to normal activities. He played with his dogs, rode his bike for more than an hour around the presidential compound and received informal briefings from his top aides.